Add Add Emoji To GitHub Repository Description as an internet til

Also add the internet section

internet/add-emoji-to-github-repository-description.md

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+# Add Emoji To GitHub Repository Description
+
+GitHub restricts the set of unicode characters that can appear in the
+description field of a repository to anything up to `0xffff`. Most emoji
+have unicode values above this. This means you will have limited success
+adding emoji via your system's.
+
+Fortunately, GitHub allows you to add any recognized emoji to a repository
+description with its specialized emoji syntax (e.g. `:memo:`). You may have
+used this syntax in other parts of GitHub such as the issue tracker.
+
+If you add an emoji like this:
+
+![](http://i.imgur.com/Tty7Cl2.png)
+
+it will show up like so:
+
+![](http://i.imgur.com/yxRwmkW.png)